package com.wpf.utils;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class JDBCUtils {
	//加载驱动，并建立数据库连接
	public static Connection getConnection() throws SQLException,
	ClassNotFoundException {
		Class.forName("com.mysql.jdbc.Driver");
		String url = "jdbc:mysql://localhost:3306/jdbctest01";
		String username = "root";
    		String password = "root123";
		Connection conn = DriverManager.getConnection(url, username, 
				password);
		return conn;
	}
	//关闭数据库，释放资源
	public static void release(Statement stmt, Connection conn) {
		if (stmt != null) {
			try {
				stmt.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
			stmt = null;
		}
		if (conn != null) {
			try {
				conn.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
			conn = null;
		}
	}
	 public static void release(ResultSet rs, Statement stmt, 
	     		Connection conn){
			if (rs != null) {
				try {
					rs.close();
				} catch (SQLException e) {
					e.printStackTrace();
				}
				rs = null;
			}
			release(stmt, conn);
	 }
}
